Crossover inlet manifold??

kokkolanpoika · Post by **kokkolanpoika** » Sat Jan 26, 2008 9:14 am

http://www.rover-v8.com/JEEngineering/w ... airbox.jpg

Nice looking inlet manifold tuning..

I just wonder how good this would be? Are they worth of money?

ChrisJC · Post by **ChrisJC** » Sat Jan 26, 2008 10:36 am

As long as it is a crossover manifold (which I can't really see from the picture), then it ought to be better. Presumably they have some figures to back it up?

Chris.

dnb · Post by **dnb** » Mon Jan 28, 2008 9:30 pm

That reminds me of my manifold design.

It gained me 53 bhp (around 20%) on my TVR.

350matt · Post by **350matt** » Tue Jan 29, 2008 12:30 pm

Does that still bolt to the std inlet manifold ?

Matt

chodjinn · Post by **chodjinn** » Tue Jan 29, 2008 12:53 pm

Hmm although I don't dispute that figure of 53bhp as it was dynoed (I believe), it still begs the question as to how the hell did that happen?!? Especially on a bloody TVR!!

dnb · Post by **dnb** » Tue Jan 29, 2008 7:05 pm

350matt wrote:Does that still bolt to the std inlet manifold ?

Yes, although I made sure mine was ported properly...

No comment on exactly where the 53 bhp came from, other than the original standard intake being dreadfully restrictive on an engine with 11:1 compression engine and a H404 cam!

5000SE · Post by **5000SE** » Wed Jan 30, 2008 12:02 am

dnb wrote:
350matt wrote:Does that still bolt to the std inlet manifold ?
Yes, although I made sure mine was ported properly...

No comment on exactly where the 53 bhp came from, other than the original standard intake being dreadfully restrictive on an engine with 11:1 compression engine and a H404 cam!

Is the 53bhp quote an increase due purely to the intake swap, everything else being the same before and after???

dnb · Post by **dnb** » Wed Jan 30, 2008 12:24 am

Everything else was identical as far as I know.

This is apart from the ECU requiring a lot of changes to the volumetric efficiency table to cope with the extra airflow capability.